反射式LD端面泵浦Nd:YAG陶瓷激光器的温度场分析  

Analysis of temperature field distribution in reflective LD-end-pumped Nd:YAG ceramic laser

作　　者：邱海齐[1] 张彬[1] 祝颂军[1] 

机构地区：[1]四川大学电子信息学院,四川成都610064

出　　处：《激光杂志》2008年第2期8-10,共3页Laser Journal

基　　金：教育部新世纪优秀人才支持计划资助(批准号NCET-05-0784)

摘　　要：针对反射式激光二极管端面泵浦Nd:YAG陶瓷激光器,建立了增益介质二次吸收的物理模型。根据热传导理论,采用有限元分析方法,定量分析了Nd:YAG陶瓷薄片介质内部的温度场分布以及温度梯度分布,讨论了影响温度场分布的主要因素。研究结果表明,Nd:YAG陶瓷薄片介质内部的温度场分布与泵浦光功率、泵浦光光斑半径、薄片厚度以及冷却方式等因素密切相关。Aecording to the reflective LD- end - pumped Nd： YAG ceramic laser, a model for double absorption of thin disk crystal was built up.Based the theory of thermal conduction, the temperature field distribution and the gradient of temperature distribution were numerically simulated by finite element analysis. Some factors affecting the temperature of crystal were studied. It can be shown that the temperature field distribution in the Nd： YAG ceramic crystal depends on the power and the radii of the pomp laser, the thickness of the crystal, as well as the cooling methods.

关 键 词：端面泵浦 ND:YAG陶瓷 薄片 二次吸收 温度场分布 

分 类 号：O433[机械工程—光学工程]